Antenna test system
Through the combination of detection module, compensation module and calculation module, the influence of RF circuit on the test results of printed circuit board antenna is solved, accurate testing and simplified operation are achieved, costs are reduced and antenna design space is improved.
Patent Information
- Application Number
- CN202422339326.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-09-24
AI Technical Summary
During the testing of printed circuit board antennas, the impact of RF lines on test results is difficult to eliminate, and frequent disconnection and connection operations are cumbersome.
The antenna test system uses a detection module, a compensation module, and a calculation module. It reduces the impact of the RF circuit on the test results by presetting compensation values and correction results, and keeps the connection between the onboard antenna and the RF circuit unchanged during the test.
It provides more accurate test results, simplifies the operation process, improves test efficiency, reduces costs and expands antenna design space.
Smart Images
Figure CN223389833U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of antenna testing technology, and in particular to an antenna testing system. Background Art
[0002] In related technologies, due to space constraints, Bluetooth antennas in smart wearable products are typically printed circuit board (PCB) antennas. PCB antennas require conduction testing during R&D and production.
[0003] However, since the PCB antenna and the RF circuit are connected, the RF circuit will affect the test results of the PCB antenna. If the PCB antenna and the RF circuit are disconnected before each test and then reconnected after the test, it will be more troublesome. Utility Model Content
[0004] The embodiments of the present application provide an antenna testing system that can simplify the testing process and reduce the impact of radio frequency lines on test results.
[0005] In a first aspect, an embodiment of the present application provides an antenna testing system, comprising a testing device and an antenna board, wherein the testing device comprises a detection module, a compensation module and a calculation module, wherein the detection module is electrically connected to the antenna board to detect the performance of the antenna board and output a test result; the compensation module is preset with a compensation value; the calculation module is electrically connected to both the detection module and the compensation module, and outputs a correction result based on the test result and the compensation value.
[0006] In some exemplary embodiments, the testing device includes: an input module, the input module is electrically connected to the compensation module, and the input module is used to change the compensation value.
[0007] In some exemplary embodiments, the antenna board includes: a board body; an on-board antenna, which is arranged on the board body and has an input end; a radio frequency circuit, which is arranged on the board body and has an output end, and the output end is electrically connected to the input end; wherein the detection module is connected to the input end of the on-board antenna and / or the output end of the radio frequency circuit to detect the performance of the antenna board and output the test results.
[0008] In some exemplary embodiments, the board has a first surface and a second surface, the onboard antenna and the RF circuit are both arranged on the first surface, a first through hole is provided on the board, the first through hole is located at one end of the first surface and connected to the input end, and the first through hole is located at one end of the first surface and conductively connected to one end of the first through hole located on the second surface.
[0009] In some exemplary embodiments, a second through hole is provided on the board body, the second through hole is spaced apart from the first through hole, the second through hole is located at one end of the first surface and is connected to the output end, the second through hole is located at one end of the first surface and is conductively connected to the end of the second through hole located at the second surface, and the second through hole is conductively connected to the first through hole.
[0010] In some exemplary embodiments, the antenna board further includes: a zero-ohm resistor, wherein a first pin of the zero-ohm resistor is fixed in the first through hole and conductively connected to the first through hole, and a second pin of the zero-ohm resistor is fixed in the second through hole and conductively connected to the second through hole.
[0011] In some exemplary embodiments, the first pin of the zero-ohm resistor passes through the first through hole, so that the end of the first through hole located on the first surface is conductively connected to the end of the first through hole located on the second surface; the second pin of the zero-ohm resistor passes through the second through hole, so that the end of the second through hole located on the first surface is conductively connected to the end of the second through hole located on the second surface.
[0012] In some exemplary embodiments, the first through hole has a first welding point at one end located on the second surface, the second through hole has a second welding point at one end located on the second surface, and the detection module abuts against the first welding point and / or the second welding point.
[0013] In some exemplary embodiments, the detection module includes a ejector pin assembly, and the ejector pin assembly is configured to abut against the first welding point and / or the second welding point.
[0014] In some exemplary embodiments, the antenna board further includes: a detection sheet, the detection sheet is adhered to the second surface and conductively connected to the first through hole, and the detection sheet is used to increase the detection area.
[0015] Beneficial Effects: The calculation module outputs a correction result based on the test results and compensation values. By compensating the test results, the influence of the RF circuit can be minimized, and the output is a correction result that better reflects the actual performance of the onboard antenna, providing more accurate test results. Furthermore, during the test, the onboard antenna and RF circuit do not need to be disconnected, making the operation simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 This is a block diagram of an antenna testing system in one embodiment of the present application;
[0018] Figure 2 is a block diagram of an antenna testing system in another embodiment of the present application;
[0019] Figure 3 This is a structural diagram of an antenna board in one embodiment of the present application;
[0020] Figure 4 This is a schematic structural diagram of an antenna board in another embodiment of the present application.
[0021] Explanation of the accompanying drawings: 100, antenna test system; 110, test device; 111, detection module; 1111, ejector pin assembly; 112, compensation module; 113, calculation module; 114, input module; 120, antenna board; 121, board body; 121a, first surface; 121b, second surface; 121c, first through hole; 121d, second through hole; 122, on-board antenna; 1221, input end; 123, RF circuit; 1231, output end; 124, zero-ohm resistor; 1241, first pin; 1242, second pin; 125, first solder joint; 126, second solder joint; 127, detection sheet. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0024] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0025] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0026] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.
[0027] like Figure 1-2 As shown, the first aspect of an embodiment of the present application provides an antenna testing system 100, which includes a testing device 110 and an antenna board 120. The testing device 110 is used to test the performance of the antenna board 120. The testing device 110 includes a detection module 111, a compensation module 112 and a calculation module 113.
[0028] The detection module 111 is electrically connected to the antenna board 120 to detect the performance of the antenna board 120 and output test results. The performance of the antenna board 120 includes measuring parameters such as the antenna's gain and input impedance, which are crucial for evaluating antenna performance. For example, the detection module 111 includes a transmitting antenna, which transmits signals and the antenna board 120 receives them. The detection module 111 evaluates the receiving performance of the antenna board 120 by analyzing the signals received by the antenna board 120. Conversely, the antenna board 120 can also transmit signals and the transmitting antenna can receive signals to evaluate the transmission performance of the antenna board 120.
[0029] The compensation module 112 has a preset compensation value, which varies depending on the type of antenna board 120. Generally speaking, the antenna board 120 includes a board body 121, an onboard antenna 122, and a radio frequency circuit 123. Both the onboard antenna 122 and the radio frequency circuit 123 are mounted on the board body 121, and the onboard antenna 122 is electrically connected to the radio frequency circuit 123. During testing, the radio frequency circuit 123 will have a certain impact on the performance of the onboard antenna 122, but this impact is a fixed value. Therefore, the compensation value is related to the radio frequency circuit 123 and is fixed for the same model of antenna board 120. Generally speaking, the radio frequency circuit 123 has a negative impact on the performance test results of the antenna.
[0030] The method for determining the compensation value can be to disconnect the onboard antenna 122 from the RF circuit 123, test the performance of the onboard antenna 122, then connect the onboard antenna 122 to the RF circuit 123, and test the performance of the onboard antenna 122 again. The compensation value can be calculated based on the difference between the two test results by comparing the two test results.
[0031] The calculation module 113 is electrically connected to the detection module 111 and the compensation module 112. The calculation module 113 can output a correction result based on the test result and the compensation value. For example, the correction result is the sum of the test result and the compensation value. By compensating the test result, the influence of the RF circuit 123 can be eliminated as much as possible to output a correction result that can better reflect the actual performance of the onboard antenna 122, thereby providing a more accurate test result. In addition, during the test, the onboard antenna 122 and the RF circuit 123 do not need to be disconnected, which makes the operation simple and the test efficiency improved. There is no need for an RF connector between the onboard antenna 122 and the RF circuit 123, which can reduce costs. In addition, since there is no need to set up an RF connector, the design space of the onboard antenna 122 is larger, which greatly reduces the difficulty of the layout of the onboard antenna 122. The antenna clearance is increased and the antenna performance is improved.
[0032] like Figure 2 As shown, in some embodiments, the test device 110 includes an input module 114, which is electrically connected to the compensation module 112 and is used to change the compensation value. The input module 114 can be, for example, a keyboard, a touch screen, or the like.
[0033] The compensation values of antenna boards 120 of different models may vary. The input module 114 can change the compensation values, so that when testing antenna boards 120 of different models, different compensation values are input to the compensation module 112, so that the antenna testing system 100 can detect antennas of different models and has better adaptability.
[0034] like Figure 2 As shown, in some embodiments, the antenna has an input terminal 1221, the RF circuit 123 has an output terminal 1231, and the output terminal 1231 is electrically connected to the input terminal 1221. The detection module 111 is connected to the input terminal 1221 of the antenna to detect the performance of the antenna board 120 and output the test results. Alternatively, the detection module 111 is connected to the output terminal 1231 of the RF circuit 123 to detect the performance of the antenna board 120 and output the test results. Alternatively, the detection module is connected to both the input terminal 1221 of the antenna and the output terminal 1231 of the RF circuit 123 to detect the performance of the antenna board 120 and output the test results. None of the above three methods has a significant impact on the test results.
[0035] like Figure 3As shown, in some embodiments, the board 121 has a first surface 121a and a second surface 121b. The antenna and RF circuit 123 are both disposed on the first surface 121a. A first through hole 121c is disposed on the board 121. One end of the first through hole 121c located on the first surface 121a is connected to the input terminal 1221. The first through hole 121c is also conductively connected to one end of the first through hole 121c located on the first surface 121a and one end of the first through hole 121c located on the second surface 121b. During testing, the detection module 111 can communicate with the antenna by connecting to one end of the first through hole 121c located on the second surface 121b.
[0036] For example, the first surface 121a can be the front of the board 121, and the second surface 121b can be the back of the board 121. Since the front of the board 121 is usually equipped with multiple electronic components, it is difficult to electrically connect the detection module 111 to the onboard antenna 122. The back of the board 121 has fewer electronic components, so testing on the back of the board 121 is less difficult. The inner wall of the first through hole 121c can be provided with a conductive layer to enable conductive connection between the two ends of the first through hole 121c. Alternatively, a metal pillar can be provided within the first through hole 121c to enable conductive connection between the two ends of the first through hole 121c.
[0037] like Figure 3 As shown, in some embodiments, a second through hole 121d is provided on the plate body 121, and the second through hole 121d is spaced apart from the first through hole 121c. One end of the second through hole 121d located on the first surface 121a is connected to the output end 1231, and one end of the second through hole 121d located on the first surface 121a is conductively connected to one end of the second through hole 121d located on the second surface 121b, and the second through hole 121d is conductively connected to the first through hole 121c. Two through holes are provided, and the detection module 111 can be abutted against any through hole, which makes the test more flexible and the contact probability greater. For example, a conductive layer can be provided on the inner wall of the second through hole 121d, so that the two ends of the second through hole 121d can be conductively connected. Alternatively, a metal column can be provided in the second through hole 121d, so that the two ends of the second through hole 121d can be conductively connected.
[0038] like Figure 3As shown, in some embodiments, the antenna board 120 further includes a zero-ohm resistor 124. A first pin 1241 of the zero-ohm resistor 124 is fixed within the first through-hole 121c and is conductively connected to the first through-hole 121c. A second pin 1242 of the zero-ohm resistor 124 is fixed to the second through-hole 121d and is conductively connected to the second through-hole 121d. The zero-ohm resistor 124 has a relatively low resistance, and the onboard antenna 122 is electrically connected to the RF circuit 123 via the zero-ohm resistor 124, which has a minimal impact on the performance of the onboard antenna 122. During the design phase, the onboard antenna 122 can be disconnected from the RF circuit 123 by removing the zero-ohm resistor 124 to test the onboard antenna 122. During the production phase, due to the low cost of the zero-ohm resistor 124 and the relatively mature welding process, the impact on cost and manufacturing difficulty is minimal.
[0039] like Figure 3 As shown, in some embodiments, the first pin 1241 of the zero-ohm resistor 124 passes through the first through-hole 121c, so that the end of the first through-hole 121c located on the first surface 121a is electrically connected to the end of the first through-hole 121c located on the second surface 121b. The first pin 1241 of the zero-ohm resistor 124 achieves an electrically conductive connection between the two ends of the first through-hole 121c, eliminating the need to provide a metal layer or metal pillar within the first through-hole 121c, thereby reducing production costs.
[0040] Second pin 1242 of zero-ohm resistor 124 passes through second through-hole 121d, electrically connecting one end of second through-hole 121d located on first surface 121a to the other end of second through-hole 121d located on second surface 121b. The conductive connection between the two ends of second through-hole 121d is achieved through second pin 1242 of zero-ohm resistor 124, eliminating the need for a metal layer or metal pillar within second through-hole 121d, thereby reducing production costs.
[0041] like Figure 3 As shown, in some embodiments, the first through hole 121c is located at one end of the second surface 121b and has a first solder joint 125, and the second through hole 121d is located at one end of the second surface 121b and has a second solder joint 126. It is understood that when welding the zero-ohm resistor 124, there will be a first solder joint 125 and a second solder joint 126. The first solder joint 125 and the second solder joint 126 are generally protruding from the second surface 121b, thereby facilitating the connection of the detection module 111 with the first solder joint 125 or the second solder joint 126. Optionally, the detection module 111 can abut against the first solder joint 125, or the detection module 111 can abut against the second solder joint 126, or the detection module 111 can abut against both the first solder joint 125 and the second solder joint 126.
[0042] like Figure 3As shown, in some embodiments, the detection module 111 includes a ejector pin assembly 1111, and the ejector pin assembly 1111 may include one ejector pin or multiple ejector pins, which is not limited here. Since the contact area at the end of the ejector pin assembly 1111 is small, it is convenient to abut against the first solder joint 125 or the second solder joint 126, which is conducive to precise operation and does not touch other solder joints to avoid causing a short circuit. Optionally, the ejector pin assembly 1111 can abut against the first solder joint 125, or the ejector pin assembly 1111 can abut against the second solder joint 126, or the ejector pin assembly 1111 can abut against the first solder joint 125 and the second solder joint 126 at the same time.
[0043] like Figure 4 As shown, in some embodiments, the antenna board 120 further includes a detection sheet 127, which is adhered to the second surface 121b and conductively connected to the first through hole 121c. The detection sheet 127 is used to increase the detection area, thereby reducing the alignment accuracy requirements of the ejector assembly 1111.
[0044] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.
Claims
1. An antenna testing system, characterized in that: The test device includes a test device and an antenna board. The test device includes: a detection module, configured to be electrically connected to the antenna board to detect the performance of the antenna board and output a test result; Compensation module, with preset compensation value; The calculation module is electrically connected to the detection module and the compensation module, and outputs a correction result according to the test result and the compensation value.
2. The antenna testing system according to claim 1, wherein: The testing device comprises: An input module is electrically connected to the compensation module, and is used to change the compensation value.
3. The antenna testing system according to claim 1, wherein: The antenna board includes: plate body; an onboard antenna, disposed on the board and having an input end; a radio frequency circuit, disposed on the board and having an output end, the output end being electrically connected to the input end; The detection module is connected to the input end of the onboard antenna and / or the output end of the radio frequency circuit to detect the performance of the antenna board and output the test result.
4. The antenna testing system according to claim 3, wherein: The board has a first surface and a second surface, the onboard antenna and the RF circuit are both arranged on the first surface, and a first through hole is provided on the board. The first through hole is located at one end of the first surface and is connected to the input end, and the first through hole is located at one end of the first surface and is conductively connected to the first through hole at one end of the second surface.
5. The antenna testing system according to claim 4, wherein: A second through hole is provided on the plate body, and the second through hole is spaced apart from the first through hole. The second through hole is located at one end of the first surface and is connected to the output end. The second through hole is located at one end of the first surface and is conductively connected to one end of the second through hole located on the second surface, and the second through hole is conductively connected to the first through hole.
6. The antenna testing system according to claim 5, characterized in that: The antenna board further includes: A zero-ohm resistor, wherein a first pin of the zero-ohm resistor is fixed in the first through hole and conductively connected to the first through hole, and a second pin of the zero-ohm resistor is fixed in the second through hole and conductively connected to the second through hole.
7. The antenna testing system according to claim 6, wherein: The first pin of the zero-ohm resistor passes through the first through hole, so that the end of the first through hole located on the first surface is conductively connected to the end of the first through hole located on the second surface; the second pin of the zero-ohm resistor passes through the second through hole, so that the end of the second through hole located on the first surface is conductively connected to the end of the second through hole located on the second surface.
8. The antenna testing system according to claim 6, wherein: The first through hole has a first welding point at one end located on the second surface, the second through hole has a second welding point at one end located on the second surface, and the detection module abuts against the first welding point and / or the second welding point.
9. The antenna testing system according to claim 8, wherein: The detection module includes: An ejector pin assembly is used to abut against the first welding point and / or the second welding point.
10. The antenna testing system according to claim 4, wherein: The antenna board further includes: A detection sheet is attached to the second surface and is conductively connected to the first through hole, and is used to increase the detection area.